A195718 Decimal expansion of arctan((1/2)^(2/3)).

5, 6, 2, 1, 5, 8, 4, 8, 4, 3, 5, 7, 2, 2, 1, 9, 0, 1, 5, 2, 2, 5, 2, 0, 2, 3, 4, 4, 3, 5, 0, 8, 2, 0, 6, 6, 5, 3, 4, 6, 6, 7, 0, 5, 8, 3, 9, 7, 5, 8, 6, 6, 5, 0, 6, 7, 0, 4, 3, 0, 8, 6, 8, 6, 9, 2, 1, 2, 0, 4, 6, 8, 3, 7, 2, 4, 9, 8, 3, 8, 2, 0, 0, 4, 5, 3, 2, 1, 2, 5, 5, 6, 1, 5, 7, 8, 4, 7, 9, 6

Offset

0,1

Links

G. C. Greubel, Table of n, a(n) for n = 0..10000

Example

arctan((1/2)^(2/3)) = 0.56215848435722190...

Mathematica

r = (1/2)^(2/3);
N[ArcTan[r], 100]
RealDigits[%]  (* A195718 *)
RealDigits[ArcTan[(1/2)^(2/3)], 10, 100][[1]] (* G. C. Greubel, Aug 20 2018 *)

Prog

(PARI) atan((1/2)^(2/3)) \\ G. C. Greubel, Aug 20 2018
(Magma) SetDefaultRealField(RealField(100)); Arctan((1/2)^(2/3)); // G. C. Greubel, Aug 20 2018

Crossrefs

Cf. A195716.

Sequence in context: A330660 A200486 A182496 * A354214 A210522 A211394

Adjacent sequences: A195715 A195716 A195717 * A195719 A195720 A195721

Keyword

nonn,cons

Author

Clark Kimberling, Sep 23 2011

Status

approved